The digits of a two digit number are differ by 3 if the digits are interchanged and the two numbers are added their sum is 77 find the numbers
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let the ones digit be x and tens digit be y
So,ATQ,
x-y=3
or y-x=3
Also ,ATQ
10y+x+10x+y=77
11x+11y=77
x+y=7
x+y+x-y=3+7
2x=10
x=5
y=2
or x=2
y=5
So the number can either be 25 or 52.
So,ATQ,
x-y=3
or y-x=3
Also ,ATQ
10y+x+10x+y=77
11x+11y=77
x+y=7
x+y+x-y=3+7
2x=10
x=5
y=2
or x=2
y=5
So the number can either be 25 or 52.
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